EFCO Special Purpose Windows Installation - Manual (Page 49)

EFCO 2014 10
Window Installation Instructions - Typical Subframe Installation Section
Subsill and Subhead Splicing Instruc ons
 Splices should be located at appropriate loca ons
to account for all expected thermal movement
and/or aesthe c.
 Splice joints are typically placed every 16 feet
maximum with a 1/2” separa on. (Reference
approved shop drawings for specifics of job)
 Field apply 4” Perma‐Barrier tape (EFCO part #
WM01) to the joints.
 Field apply non‐hardening, skinning sealant over
the tape at the joints.
 Subsill Splicing:
 Apply 4” Perma‐Barrier tape (EFCO part #
WM01) to underside of subsill joint.
 Apply sealant over the tape at the joints.
 Ensure that the sealant overlaps the
aluminum surfaces by at least 1/8”.
 Subhead Splicing:
 Apply 4” Perma‐Barrier tape (EFCO part #
WM01) to inside of subhead joint star ng
above gasket reglet and stopping at
closure hook.
 Apply sealant over the tape at the joints.
 Ensure that the sealant overlaps the
aluminum surfaces by at least 1/8”.
 Apply 4” Perma‐Barrier tape (EFCO part #
WM01) to outside of subhead joint.
 Closure splices should be at a different loca on
than the subhead, using a similar Perma‐barrier
and sealant applica on.
Apply WM01
to under side
of Subsill
Seal over tape
at joint
Apply WM01
to under side
of subhead
Seal over tape
at joint
Apply WM01
to top side of
subhead
Underside of subsill shown Top side of subsill shown
Inside of subhead shown Outside of subhead shown Outside of subhead shown